strrat | 743569106872154115ba9aa6c4d354ebacb7cb9db052306416f4e3890b994239

General

Target

ORDER2490407.PDF.js
Size

7KB
MD5

4fcc56b7dbee1342e383030ab4be2e4a
SHA1

63f5f4aa8bc732b9e678e64003f3760ee04c803e
SHA256

743569106872154115ba9aa6c4d354ebacb7cb9db052306416f4e3890b994239
SHA512

07ae0d9c24c3857b058f52cc6719196133e50da699b065e96a27b7e7629a37fede86479884ffddce3b5ba4b38aca95ba4f419fe9eb48cc1effc0a33d5a7606ed
SSDEEP

192:PgDlcwvjBSx2FHIdPNLSxMISUEcwvjszhczS8McInkjHcZSfAIcLcRSTJcwvjG/i:PB47

Score

10^/10

strrat execution persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat

Detect jar appended to MSI 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022b25-7.dat	jar_in_msi

Blocklisted process makes network request 1 IoCs

flow	pid	Process
1	4496	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VjX.jar	java.exe

Loads dropped DLL 1 IoCs

pid	Process
4308	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VjX = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\VjX.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VjX = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\VjX.jar\""	java.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings	WScript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2736	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 1324	4496	wscript.exe	86
PID 4496 wrote to memory of 1324	4496	wscript.exe	86
PID 1324 wrote to memory of 316	1324	WScript.exe	87
PID 1324 wrote to memory of 316	1324	WScript.exe	87
PID 316 wrote to memory of 4180	316	javaw.exe	93
PID 316 wrote to memory of 4180	316	javaw.exe	93
PID 4180 wrote to memory of 4896	4180	java.exe	96
PID 4180 wrote to memory of 4896	4180	java.exe	96
PID 4180 wrote to memory of 4308	4180	java.exe	97
PID 4180 wrote to memory of 4308	4180	java.exe	97
PID 4896 wrote to memory of 2736	4896	cmd.exe	100
PID 4896 wrote to memory of 2736	4896	cmd.exe	100

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER2490407.PDF.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\JLLUMC.js"
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Program Files\Java\jre-1.8\bin\javaw.exe
    "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\VjX.jar"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:316
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\VjX.jar"
      4⤵
      Drops startup file
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:4180
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\VjX.jar"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4896
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\VjX.jar"
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:2736
    - - C:\Program Files\Java\jre-1.8\bin\java.exe
        
        "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\VjX.jar"
        5⤵
        Loads dropped DLL
        
        PID:4308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\JLLUMC.js

Filesize
367KB

MD5
961caa8b91ecbca3ce8601dc4a515e51

SHA1
8480098196ccd298f122bbe9cc463954ddc0f241

SHA256
320ccbaab0c9d5cd7da65b3323b6e3d3cf36c5010d7f80598861150fa809eceb

SHA512
ce591541e0f3ff5d4781dd04c902336ff3b6b416934516c25d11886195d5829bbc13d20e5489811c8995c083b1842f090171e4f6cbf249a64cd1c78f580a72a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\VjX.jar

Filesize
258KB

MD5
e47c15a77ec5efc447b41c23dd4760bc

SHA1
ebd7c32dd6ba13a999e2f05552e6e432d9d49035

SHA256
5f6f4c0f820e97ca6c40d16d25ca1e24010c4f4e3462f4f79c0de8e886528b2a

SHA512
c34daf6940637261e3e596187d9e82c0aecc9f5dc3099126fa8cdc4e8ac596128fc2ce16b829933b802aa0f83e3c916de427f59474636d56ce7bb22f73e0ea35

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna6526037451065808590.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-945322488-2060912225-3527527000-1000\83aa4cc77f591dfc2374580bbd95f6ba_03d68389-5a68-4d9e-92ac-47b927e624dd

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\lib\jna-5.5.0.jar

Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\lib\jna-platform-5.5.0.jar

Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar

Filesize
4.1MB

MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\lib\system-hook-3.5.jar

Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
memory/316-60-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-86-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-87-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-84-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-81-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-69-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-63-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-47-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-45-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/316-27-0x0000020B981E0000-0x0000020B981E1000-memory.dmp

Filesize
4KB

Download
memory/4180-120-0x000002BAD7F60000-0x000002BAD7F61000-memory.dmp

Filesize
4KB

Download
memory/4308-148-0x0000025CECD50000-0x0000025CECD51000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads